JP3071597B2 - Satellite communication antenna device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a satellite communication antenna device used for satellite communication.

[0002]

2. Description of the Related Art FIGS. 6 and 7 are a side view and a view in the direction of an arrow A showing a conventional satellite communication antenna apparatus. In FIG.
Reference numeral 2 denotes a Y axis which is one of the rotation axes of the reflecting mirror unit 1, 3a denotes a motor, and 3b denotes a Y jack which converts the rotation of the motor 3a into a linear motion and rotates the reflecting mirror unit 1 around the Y axis 2. It is.

Reference numeral 4 denotes a structural part (X / Y mount) for supporting the reflecting mirror unit 1 together with the Y jack 3b; 5, an X axis as a rotation axis around which the structural part 4 rotates; 6a, a motor;
Is an X jack that rotates the structure 4 around the X axis 5,
7 is a base for supporting the structure 4.

Next, the operation will be described. First, the motor 6a transmits its rotation to the X jack 6b, which converts the rotation into a linear motion and pushes and pulls the structure 4. Since the structure portion 4 is supported on the base 7 so as to be freely rotatable around the X axis 5, as a result, the reflecting mirror portion 1 is rotated around the X axis 5 by pushing and pulling the X jack 6b. .

On the other hand, the Y jack 3 b rotates around the X axis 5 together with the structure 4. Then, the rotation of the motor 3a is converted into linear motion by the Y jack 3b, and the reflecting mirror unit 1 is pushed and pulled. The reflecting mirror portion 1 is supported by the structure portion 4 so as to be freely rotatable around the Y axis 2, and thus rotates around the Y axis 2 by pushing and pulling the Y jack 3 b.

The X jack 6b and the Y jack 3
b, when the rotation angles around the X axis 5 and the Y axis 2 become large, respectively, the shortest distance between the X jack 6b and the Y jack 3b and the X axis 5 and the Y axis 2, that is, the driving radius becomes small. Since the load on the motors 6a and 3a increases and the reflector 1 interferes with the structure 4, the antenna device is used only in a limited driving range.

[0007]

Since the conventional satellite communication antenna apparatus is configured as described above, when the rotation angle around the X axis 5 or the Y axis 2 as the rotation axis increases, the driving radius decreases. As a result, the load on the motors 6a and 3a increases, so that it is necessary to increase the motor capacity.

Further, unless the driving radius is reduced to reduce the backlash of the X jack 6b and the Y jack 3b, the tracking accuracy of the antenna cannot be satisfied, and the backlash of the X jack 6b and the Y jack 3b can be reduced. Therefore, when high-precision processing is performed, there is a problem that the cost of the jack is increased.

The first aspect of the present invention has been made in order to solve the above-described problems, and it is possible to prevent the load on the motor from changing even when the rotation angle around the rotation axis increases. It is an object of the present invention to provide a small-sized satellite communication antenna device that can eliminate backlash and can freely select a motor installation position.

A second object of the present invention is to provide a satellite communication antenna device capable of preventing backlash around the second rotation axis by utilizing an unbalanced moment due to the attitude of the reflecting mirror.

A third object of the present invention is to provide a satellite communication antenna device which has a very simple and compact structure, can increase the driving area of the reflector, and can reduce the load on the motor. I do.

A fourth object of the present invention is to provide a satellite communication antenna device capable of reliably preventing backlash in the first axis or the second axis.

A fifth object of the present invention is to provide a satellite communication antenna device capable of reliably preventing backlash in the first axis or the second axis and realizing synchronous control of the rotation angle of each axis. I do.

[0014]

The satellite communication antenna device according to the first aspect of the present invention is rotatably mounted on a base.
And a first shaft attached to each end of the first shaft.
A first V between the first gear and the first gear;
Each one second gear having a belt stretched thereon, and the second gear
Each of which is driven via one speed reducer and
A first motor for generating torque in the opposite direction;
The shaft is rotatably mounted, and the driving force of the first motor is transmitted.
Structure that rotates around the first axis, and at both ends of the second axis
Each of the attached third gears and the third gear
A fourth V-belt is stretched between the fourth V-belts.
A gear and each of the fourth gears via a respective speed reducer.
Drive each other and generate torques in opposite directions.
And the driving force of the second motor is transmitted
A reflecting mirror section rotating about the second axis;
Motor and the second motor generate torque in the forward and reverse directions.
Backlash around the first and second axes
Is to be erased.

According to a second aspect of the present invention, there is provided a satellite communication antenna device comprising: a first shaft rotatably mounted on a base;
Two first gears mounted on a first shaft;
Each one of which has a first V-belt stretched between it and a gear.
The second gear and each of the second gears
And generate torques in opposite directions to each other.
Each of the first motor and the second shaft are rotatably mounted,
The driving force of the first motor is transmitted and rotates around the first axis
And a first shaft attached to one end of the second shaft.
Between the third gear and the third gear, respectively.
Each of the fourth gears on which the
Each second through each one speed reducer
A motor, a driving force of the second motor being transmitted, and a second shaft
With a reflecting mirror that rotates around
Therefore, the unbalanced moment generated around the second axis
This is to eliminate backlash.

According to a third aspect of the present invention, there is provided a satellite communication antenna device comprising: a first shaft rotatably mounted on a base;
A first gear attached to one end of a first shaft;
Second gears each having a V-belt stretched between them
And a first mode for driving the second gear via a speed reducer.
And the second shaft are installed on the first shaft and rotatably mounted on the second shaft.
And rotated around the first axis by the first motor.
And a portion mounted on the structure for rotation about a second axis.
And a second mirror provided on the structural part.
Converts the rotation of the mirror into a linear motion, and urges the reflecting mirror to rotate.
And the reflection mirror section rotates around the second axis.
The degree to which the load on the motor does not change even if the angle increases
Light weight and does not interfere with the driving range of the structure
Have a small diameter reflecting mirror.

According to a fourth aspect of the present invention, in the satellite communication antenna device, the V-belt, the first V-belt, and the second V-belt are stainless steel belts which do not expand and contract.

According to a fifth aspect of the present invention, there is provided a satellite communication antenna device wherein each of the first V-belts and / or each of the second V-belts is a timing belt capable of synchronizing rotation angles. is there.

[0019]

The satellite communication antenna device according to the first aspect of the present invention drives the same first axis and second axis by one motor that rotates forward and backward, respectively, so that the speed reducer, the gears, and the V belt Backlash can be eliminated.

Further, in the satellite communication antenna device according to the second aspect of the present invention, with respect to the second axis, the unbalance moment around the rotation axis caused by the own weight of the reflecting mirror unit is used.
Eliminate backlash between the reducer, gears and V-belt.

The satellite communication antenna apparatus according to the third aspect of the present invention drives the first axis by one motor and rotates the reflecting mirror section around the second axis by a jack.
Enables application to small diameter reflectors.

In the satellite communication antenna device according to the fourth aspect of the present invention, the V-belt, the first V-belt, and the second V-belt are made of stainless steel belts, so that they loosen when driving the gears. Can be prevented,
Therefore, the rotational position of the reflecting mirror unit about the first axis and the second axis can be controlled with high precision, and the rotation angles can be accurately synchronized.

In the satellite communication antenna apparatus according to the fifth aspect of the present invention, the rotation angle can be synchronized by using each one first V belt and / or each one second V belt as a timing belt. Thus, the rotational position of the reflecting mirror unit about the first axis and the second axis can be controlled with high precision.

[0024]

[Embodiment 1] An embodiment of the first aspect of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is a reflecting mirror unit,
2 is a Y axis (second axis), 3a is a motor, 8 is a reduction gear for reducing the rotation of the motor 3a, 9 is an output shaft of the reduction gear 8, FIG.
Gears (fourth gears) mounted as shown in 10
Is a gear (third gear) provided on the Y axis 2 as the second axis.

Reference numeral 11 denotes a V-belt (second V-belt) for transmitting the rotation of the motor 3a to the Y-axis 2;
(X / Y mount), 2 is a second unit which is attached to both ends of the gear 10 and rotates together with the reflecting mirror unit 1.
Axis.

Further, 14 is a speed reducer for reducing the rotation of the motor 6a, 15 is a gear (second gear) attached to the output shaft of the speed reducer 14, and 16 is provided on the X axis 5 as the first axis. A gear (first gear) 17 is a V-belt (first V-belt) for transmitting the rotation of the motor 6a to the X-axis 5.

Next, the operation will be described. First, the rotation of the motor 3a is reduced by the speed reducer 8 and the V-belt 11
Through the gears 9 and 10, the reflecting mirror unit 1 is rotated about the Y axis 2 with the reflecting mirror unit 1. At this time, each motor 3a
Generates torque in the forward and reverse directions, so that backlash between the speed reducer 8, the gears 9, 10 and the V-belt 11 is eliminated.

On the other hand, as for the motor 6a, the motor 3a
Similarly to the above, the rotation of the motor 6a is reduced by the speed reducer 14, and the gear 16 is rotated around the X axis (first axis) via the V-belt 17 and the gears 15 and 16,
The reflecting mirror unit 1 is rotated together with the structure unit 12.

The speed reducer 14 and the base 7 supporting the structure 12 are fixed to the ground or the like, and the motor 3a and the speed reducer 8 are mounted on the structure 12, and are structured by a motor (first motor) 6a. The part 12 rotates around the X axis 5.

Embodiment 2 FIG. FIG. 3 shows an embodiment of the second aspect of the present invention, in which 3a is a motor (second motor), 8 is a reduction gear for reducing the rotation of the motor 3a, and 9 is an output shaft of the reduction gear 8. The attached gear 18 is an EL axis (second axis) which is one of the rotation axes on which the reflecting mirror unit 1 is rotated.
(Shaft), 10 is a gear provided on the EL shaft 18, and 11 is a V-belt for transmitting the rotation of the motor 3 a to the EL shaft 18.

Reference numeral 19 denotes a structural part (AZ / EL mount) for supporting the reflecting mirror part 1, 20 denotes an AZ axis (first axis) which is one of the rotation axes serving as the center of horizontal rotation of the structural part 19, 2
1 is a gear that is arranged side by side so as to be rotatable about an AZ axis 20;
2 is a V-belt for transmitting the rotation of the motor 6a to the AZ shaft 20 via the gears 15 and 21;
It is a base that supports it rotatably around.

In this embodiment, the rotation of the motor 3a is reduced by the speed reducer 8 and the rotation shaft 13 is rotated around the EL shaft 18 via the V-belt 11 and the gears 9 and 10.
Each time, the reflecting mirror unit 1 rotates. At this time, the backlash around the EL axis 18 is eliminated by the unbalanced moment caused by the attitude of the reflecting mirror 1.

On the other hand, the rotation of the motor 6a is
, And each one of the V belt 22 and the gear 15,
The structure 19 rotates with the gear 21 around the AZ axis 20 via 21.

The motor 6a and the speed reducer 14 are fixed to the base 23, and the motor 3a and the speed reducer 8 are attached to the structural portion 19.
The mirror part 1 rotates together with the structure part 19 around the axis 20.

Embodiment 3 FIG. FIG. 4 shows an embodiment of the third aspect of the present invention. In FIG. 4, reference numeral 24 denotes a DEC axis (second axis) which is one of the rotation axes on which the reflecting mirror unit 1 rotates, and 25 denotes a rotation axis of the earth. DEC axis 2 set parallel and as second axis
HA as a first axis for rotating the reflecting mirror unit 1 together with the mirror 4
Axis (first axis).

Reference numeral 33 denotes a jack for converting the rotation of the motor 6a into linear motion to rotate the reflecting mirror unit 1 around the DEC shaft 24, 26 denotes a motor as a first motor,
Reference numeral 7 denotes a speed reducer for reducing the rotation of a motor (first motor) 26, and reference numeral 28 denotes a gear as a second gear mounted on an output shaft of the speed reducer 27.

In FIG. 5, reference numeral 29 denotes a gear as a first gear provided on the HA shaft 25;
That transmits the rotation of the shaft to the HA shaft 25 via the gears 28 and 29
In FIG. 4, reference numeral 31 denotes a structural part for supporting the reflecting mirror part 1 and attaching a jack 33;
It is a base that supports 1.

In this embodiment, the motor 6a as the second motor converts its rotation into a linear motion by the jack 33, thereby pushing and pulling the reflecting mirror unit 1. The reflecting mirror section 1 is supported by the structure section 31 so as to be freely rotatable about the DEC axis 24, and is rotated about the DEC axis 24 by pushing and pulling the jack 33.

On the other hand, the rotation of the first motor 26 is reduced by the speed reducer 27, and the first motor 26 rotates the structure portion 31 for each gear 29 around the HA shaft 25 via the V-belt 30 and the gear 28. Since the motor 26 and the speed reducer 27 are fixed to the base, and the backlash cannot be eliminated by this method, it is effective for a reflecting mirror having a small diameter.

Embodiment 4 FIG. In the above embodiment, V
Belt 30 or first V-belts 17, 22, second V-belt
By using a stainless steel belt for the belt 11, there is no variation in the rotation of each axis as much as the belt does not expand and contract, and the rotational position of the reflecting mirror unit 1 can be set with high precision.

Embodiment 5 FIG. Further, in the above embodiment, the first belts 17 and 22 and / or each second belt 11 at each position are timing belts, so that the rotation angles can be synchronized with each other, and the reflections can be reflected. The rotational position of the mirror unit 1 can be set with higher accuracy.

[0042]

As described above, according to the first aspect of the present invention, the first shaft rotatably mounted on the base and the first shaft
A first gear mounted on each end of the shaft;
Each of which has a first V belt stretched between the gears
A second gear and each of the second gears
Drives through gears and generates torques in opposite directions
Each first motor and the second shaft are rotatably mounted.
Then, the driving force of the first motor is transmitted and
A rotating structure, and each one attached to both ends of the second shaft.
, And a second gear between the third gear and the third gear, respectively.
A fourth gear on which a V-belt is stretched, and a fourth tooth
Each of the cars is driven via one speed reducer and
A second motor for generating a torque in the opposite direction;
The driving force of the second motor is transmitted to rotate around the second axis.
A first motor and a second motor
Generates torque in the forward and reverse directions to
And the backlash around the second axis can be eliminated, so that the load on the motor can be equalized and the backlash between the reducer, gears and V-belt can be eliminated,
As a result, an antenna having a high accuracy in tracking the antenna composed of the reflecting mirror can be obtained, and the motor mounting position can be freely selected using the V-belt, so that the antenna device can be downsized.

According to the second aspect of the present invention, on the base
A first shaft rotatably mounted on the first shaft and attached to the first shaft
Between the two first gears and the first gear
Each one second gear on which the first V-belt is stretched,
Driving each of the second gears via a respective speed reducer
And generates a torque in opposite directions to each other.
A motor and a second shaft are rotatably mounted on the first motor.
A driving force is transmitted to rotate around a first axis;
A third gear attached to one end of the second shaft;
Second V-belts are respectively stretched between the third gear and the third gear.
Each of the fourth gears and each of the fourth gears
Each second motor driven through a speed reducer of
The driving force of the second motor is transmitted to rotate around the second axis.
And a reflecting mirror part,
Backlash around the second axis due to equilibrium moment
Since erasing by imbalance moment around the EL axis of the second shaft can erase the backlash, the second no axis provided motor or speed reducer min is obtained which can be a device at low cost effective.

According to the third aspect of the present invention, the base is rotated on the base.
A first shaft freely erected and attached to one end of the first shaft
V between the first gear and the first gear
A second gear on which the belt is stretched, and reducing the speed of the second gear
A first motor driven through the machine, and a first motor
And the second shaft is rotatably mounted, and the first motor
A structure that rotates about a first axis and a second axis on the structure
And a reflector supported to rotate around
Converts the rotation of the second motor provided on the unit to linear motion
And a jack that rotates and biases the reflecting mirror
The mirror section is capable of moving even when the rotation angle around the second axis increases.
Light enough to keep the load on the
Has a small diameter mirror that does not interfere with the drive range of the
Therefore , there is an effect that the drive control of the reflecting mirror portion having a small diameter can be realized with a small and low-cost configuration.

According to the fourth aspect of the present invention, the V-belt, the first V-belt, and the second V-belt are configured to be stainless steel belts which do not expand and contract, so that each V-belt can be prevented from being loosened. There is an effect that a device that can control the rotational position of the reflecting mirror unit with high accuracy is obtained.

According to the fifth aspect of the present invention, each one of the first V
Since the belt and / or each second V-belt is configured as a timing belt capable of synchronizing the rotation angles, the rotation angles of the two opposing gears can be synchronized, and thus the reflecting mirror section There is an effect that a rotational position can be controlled with high accuracy.

[Brief description of the drawings]

FIG. 1 is a side view showing a satellite communication antenna device according to an embodiment of the present invention.

FIG. 2 is a view of the satellite communication antenna device shown in FIG.

FIG. 3 is a front view showing a satellite communication antenna device according to an embodiment of the present invention;

FIG. 4 is a side view showing an antenna device for satellite communication according to one embodiment of the third invention.

FIG. 5 is a view showing the vicinity of a V belt in FIG.
It is an arrow view.

FIG. 6 is a side view showing a conventional satellite communication antenna device.

FIG. 7 is a view of the satellite communication antenna device shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Reflecting mirror part 2 Y axis (2nd axis) 3a Motor (2nd motor) 5 X axis (1st axis) 6a Motor (1st motor) 7,23,32 Base 8,14,27 Reduction gear 9 Gears (fourth gear) 10 Gears (third gear) 11 V belt (second V belt) 12, 19, 31 Structure parts 15, 28 Gears (second gear) 16, 21, 29 Gears (second gear) 1 gear) 17, 22 V belt (first V belt) 18 EL axis (second axis) 20 AZ axis (first axis) 24 DEC axis (second axis) 25 HA axis (first axis) 26 Motor (First motor) 30 V belt 33 jack

Claims (5)

(57) [Claims] A first shaft rotatably mounted on a base.
And a first gear attached to each end of the first shaft
And a first V-belt between the first gear and the first gear.
Each one of the second gears, and each of the second gears
Are driven through one speed reducer and
A first motor for generating a torque;Rotate the second axis
And the driving force of the first motor is transmitted.
Rotate around the first axisStructure part and both ends of the second shaft
Each of the third gears attached to the
The second V-belt is stretched between
And each of the fourth gears via a respective speed reducer.
Drive each other and generate torques in opposite directions to each other.
A second motor;The driving force of the second motor is transmitted
Rotate around the second axisWith a reflector, The first motor and the second motor move in forward and reverse directions.
By generating a torque, the first shaft and the second shaft
Eliminate backlash around axis Satellite communication antenna
Device. 2. A first shaft rotatably mounted on a base.
And two first gears mounted on the first shaft;
First V-belts are respectively stretched between the first gears and the first gears.
Each second gear and each of the second gears
And reduce the torque in opposite directions.
A respective first motor generated,The second shaft is rotatably mounted
And the driving force of the first motor is transmitted to the first motor.
Rotate around an axisAttach to one end of the second shaft
Between each attached third gear and the third gear
Each fourth gear having a second V-belt stretched thereon
And driving each of the fourth gears via a respective one of the speed reducers.
A second motor,The driving force of the second motor
Is transmitted and rotates around the second axis.With the reflector
Preparation, The unbalanced moment caused by the attitude of the reflector
Therefore, the backlash around the second axis is eliminated. Satellite communication
Credit antenna device. 3. A first shaft rotatably mounted on a base.
A first gear attached to one end of the first shaft;
V-belts are stretched between the first gear and the second gear.
And a first gear that drives the second gear via a speed reducer.
And a motor provided on the first shaft,Turn the second axis
The first shaft is rotatably mounted, and the first shaft is driven by the first motor.
Rotate aroundA structure, and the second axis on the structure.
A reflecting mirror portion supported to rotate around
Change the rotation of the second motor provided on the
And a jack for rotating and biasing the reflecting mirror.
e, The reflecting mirror section has a large rotation angle around the second axis.
Even if the load on the motor does not change,
Light and direct so that it does not interfere with the driving range
Has a small diameter reflector An antenna device for satellite communication. 4. A V-belt or the first V-belt, a satellite communication antenna device according to any one of claims 1 to 3 in which the stainless steel belt without stretching the second V-belt. 5. The satellite communication antenna according to claim 1, wherein each of the first V-belts and / or each of the second V-belts is a timing belt capable of synchronizing rotation angles. apparatus.